Three more cars just pulled into the online lot for the Xbox 360 version of Need for Speed Carbon. Though the cars were already unlockable by playing through the game, players can also take the easy route and outright purchase the three cars. Now available for purchase from Xbox Live Marketplace are a 2004 Mercedes SLR Mclaren, a 2004 Porsche Carrera GT, and a 2004 Lamborghini Gallardo. Each car is available for 80 Marketplace points ($1).